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1.
Heliyon ; 10(15): e35548, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39166035

RESUMO

This study focused on designing a WASH Index for assessing the status of WASH in Primary Healthcare Facilities (PHCs) especially for low- and middle-income countries. To assess the effectiveness of the WASH Index in evaluating the WASH in PHCs, PHCs were selected from 70 Local Government Areas (LGA) across 3 Southwestern States in Nigeria. The WASH index comprises of the five Joint Monitoring Programme service ladders as outlined in the World Health Organization Global Baseline Report for monitoring basic WASH services in health care facilities: water, sanitation, hygiene, waste management and environmental cleaning. The 5 service elements (termed as components) assessed were based on 10 indicators and 30 sub-indicators. The results of the WASH Index of the PHCs were compared statistically on LGA and State basis with emphasis on the status of WASH facilities. The study concludes that the result would further provide baseline information on the status of WASH in PHCs in the selected States in the quest to achieve the Sustainable Development Goals (SDGs). This study recommends that the WASH Index could be adopted an assessment tool for evaluating WASH in PHCs in other to ensure communication of results to policy makers and other relevant stakeholders, for effective monitoring healthcare facilities.

2.
J Alzheimers Dis ; 97(2): 855-870, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38143343

RESUMO

BACKGROUND: Chronic disruption of the circadian timing system, often reflected as a loss of restful sleep, also includes myriad other pathophysiological effects. OBJECTIVE: The current study examined how chronic circadian disruption (CD) could contribute to pathology and rate of progression in the AßPP/PS1 mouse model of Alzheimer's disease (AD). METHODS: A chronic CD was imposed until animals reached 6 or 12 months of age in AßPP/PS1 and C57BL/6J control mice. Home cage activity was monitored for a period of 3-4 weeks prior to the endpoint along with a single timepoint measure of glucose sensitivity. To assess long term effects of CD on the AD phenotype, animals were re-entrained to a no disruption (ND) schedule just prior to the endpoint, after which a Morris water maze (MWM) was used to assess spatial learning and memory. RESULTS: Dampening of nighttime activity levels occurred in disrupted animals, and female animals demonstrated a greater adaptability to CD. Diminished arginine vasopressin (AVP) and vasoactive intestinal peptide (VIP) levels in the suprachiasmatic nucleus (SCN) of 12-month male AßPP/PS1 exposed to the CD paradigm were observed, potentially accounting for the diminished re-entrainment response. Similarly, CD worsened performance in the MWM in 12-month male AßPP/PS1 animals, whereas no effect was seen in females. CONCLUSIONS: Collectively, these findings show that exposure to chronic CD impairs circadian behavioral patterns and cognitive phenotypes of AßPP/PS1 mouse model in a sex-dependent manner.


Assuntos
Doença de Alzheimer , Precursor de Proteína beta-Amiloide , Camundongos , Masculino , Feminino , Animais , Precursor de Proteína beta-Amiloide/genética , Camundongos Transgênicos , Camundongos Endogâmicos C57BL , Doença de Alzheimer/patologia , Modelos Animais de Doenças , Presenilina-1/genética
3.
Cells ; 12(13)2023 06 29.
Artigo em Inglês | MEDLINE | ID: mdl-37443781

RESUMO

The molecular mechanisms underlying diet-induced obesity are complex and remain unclear. The activation of the aryl hydrocarbon receptor (AhR), a xenobiotic sensor, by obesogens may contribute to diet-induced obesity through influences on lipid metabolism and insulin resistance acting at various sites, including adipose tissue. Thus, our hypothesis was that conditional AhR depletion, specifically from mature adipose tissue (CadKO), would improve high-fat diet (HFD)-induced metabolic dysfunction. CadKO protects mice from HFD-induced weight gain. CadKO females eat fewer calories, leading to increased energy expenditure (EE) and improved glucose tolerance on HFD. Our exploration of adipose tissue biology suggests that the depletion of AhR from adipocytes provides female mice with an increased capacity for adipogenesis and lipolysis, allowing for the maintenance of a healthy adipocyte phenotype. The HFD-induced leptin rise was reduced in CadKO females, but the hypothalamic leptin receptor (LepR) was increased in the energy regulatory regions of the hypothalamus, suggesting an increased sensitivity to leptin. The estrogen receptor α (ERα) was higher in CadKO female adipose tissue and the hypothalamus. CadKO males displayed a delayed progression of obesity and insulin resistance. In males, CadKO ameliorated proinflammatory adipocytokine secretion (such as TNFα, IL1ß, IL6) and displayed reduced inflammatory macrophage infiltration into adipose depots. Overall, CadKO improves weight control and systemic glucose homeostasis under HFD challenge but to a more profound extent in females. CadKO facilitates a lean phenotype in females and mediates healthy adipose-hypothalamic crosstalk. In males, adipose-specific AhR depletion delays the development of obesity and insulin resistance through the maintenance of healthy crosstalk between adipocytes and immune cells.


Assuntos
Resistência à Insulina , Leptina , Masculino , Feminino , Animais , Camundongos , Resistência à Insulina/fisiologia , Receptores de Hidrocarboneto Arílico/metabolismo , Obesidade/metabolismo , Dieta Hiperlipídica/efeitos adversos , Glucose/metabolismo
4.
World J Surg ; 47(8): 1919-1929, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37069318

RESUMO

BACKGROUND: Inadequate trauma care training opportunities exist in Low- and Middle-Income Countries. Jos University Teaching Hospital and the West African College of Surgeons (WACS) have synergized, over the past 15 years, to introduce a yearly, certified, multidisciplinary Trauma Management Course. We explore the history and evolution of this course. METHODS: A desk review of course secretariat documents, registration records, schedules, pre- and post-course test records, post-course surveys, and account books complemented by organizer interviews was carried out to elaborate the evolution of the Trauma Management Course. RESULTS: The course was started as a local Continuing Medical Education program in 2005 in response to recurring cycles of violence and numerous mass casualty situations. Collaborations with WACS followed, with inclusion of the course in the College's yearly calendar from 2010. Multidisciplinary faculty teach participants the concepts of trauma care through didactic lectures, group sessions, and hands-on simulation within a one-week period. From inception, there has been a 100% growth in lecture content (from 15 to 30 lectures) and in multidisciplinary attendance (from 23 to 133 attendees). Trainees showed statistically significant knowledge gain yearly, with a mean difference ranging from 10.1 to 16.1% over the past 5 years. Future collaborations seek to expand the course and position it as a catalyst for regional emergency medical services and trauma registries. CONCLUSIONS: Multidisciplinary trauma management training is important for expanding holistic trauma capacity within the West African sub-region. The course serves as an example for Low- and Middle-Income contexts. Similar contextualized programs should be considered to strengthen trauma workforce development.


Assuntos
Cirurgiões , Humanos , Universidades , Nigéria , Currículo , Hospitais de Ensino , Ensino
5.
Drug Metab Pers Ther ; 37(3): 277-287, 2022 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-35218172

RESUMO

OBJECTIVES: This study sought to investigate the beneficial effect of kolaviron (KV) (a biflavonoid) isolated from Garcinia kola seed on chronic unpredictable mild stress (CUMS)-induced anxiety- and depressive-like behavior. METHODS: Male albino mice were randomly divided into six groups (n=8) as follows; Group I: vehicle-control unstressed; Group II: CUMS-control; Group III-V: CUMS + KV 1, 5 or 50 mg/kg, respectively, Group VI: KV (50 mg/kg, p.o.) unstressed mice. Animals were subjected to CUMS for 14 days, followed by estimation of depressive- and anxiety-like behavior from days 14-16. This was followed by biochemical assays for oxidative stress, hypothalamo-pituitary axis, cholinergic, and BDNF signaling. RESULTS: CUMS caused significant reduction in time spent in open arms of elevated plus maze test (EPM) and increase in immobility time in tail suspension test (TST) and forced swim test (FST) ameliorated by KV treatments. KV administration also attenuated CUMS-induced malondialdehyde/nitrite generation and decrease in antioxidant enzymes activities in the prefrontal cortex and hippocampus. CUMS increased serum corticosterone, acetylcholinesterase activity, and reduced BDNF level in the PFC and hippocampus were attenuated by KV administration. CONCLUSIONS: KV prevented CUMS induced anxiety- and depression-like behavior in mice through enhancement of antioxidant defense mechanisms, neurotrophic factors, and cholinergic systems.


Assuntos
Fator Neurotrófico Derivado do Encéfalo , Sistema Hipotálamo-Hipofisário , Acetilcolinesterase , Animais , Antidepressivos , Antioxidantes/farmacologia , Ansiedade/tratamento farmacológico , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Fator Neurotrófico Derivado do Encéfalo/farmacologia , Colinérgicos/farmacologia , Depressão/tratamento farmacológico , Modelos Animais de Doenças , Flavonoides , Sistema Hipotálamo-Hipofisário/metabolismo , Masculino , Camundongos , Sistema Hipófise-Suprarrenal/metabolismo , Estresse Psicológico/tratamento farmacológico
6.
Trop Doct ; 52(2): 360-361, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35043732

RESUMO

We describe construction of an improvised, low-cost, negative-pressure, closed tube surgical drain constructed from an empty intravenous fluid container and an infusion giving set used in the low-resource rural context.


Assuntos
Drenagem , Humanos
7.
J Alzheimers Dis ; 85(3): 1077-1093, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34897085

RESUMO

BACKGROUND: Circadian disruption has long been recognized as a symptom of Alzheimer's disease (AD); however, emerging data suggests that circadian dysfunction occurs early on in disease development, potentially preceding any noticeable cognitive deficits. OBJECTIVE: This study compares the onset of AD in male and female wild type (C57BL6/J), transgenic (AßPP/PS1), and knock-in (APPNL-F/NL-F) AD mouse models from the period of plaque initiation (6 months) through 12 months. METHODS: Rhythmic daily activity patterns, glucose sensitivity, cognitive function (Morris water maze, MWM), and AD pathology (plaques formation) were assessed. A comparison was made across sexes. RESULTS: Sex-dependent hyperactivity in AßPP/PS1 mice was observed. In comparison to C57BL/6J animals, 6-month-old male AßPP/PS1 demonstrated nighttime hyperactivity, as did 12-month-old females. Female AßPP/PS1 animals performed significantly worse on a MWM task than AßPP/PS1 males at 12 months and trended toward increased plaque pathology. APPNL-F/NL-F 12-month-old males performed significantly worse on the MWM task compared to 12-month-old females. Significantly greater plaque pathology occurred in AßPP/PS1 animals as compared to APPNL-F/NL-F animals. Female AßPP/PS1 animals performed significantly worse than APPNL-F/NL-F animals in spatial learning and memory tasks, though this was reversed in males. CONCLUSION: Taken together, this study provides novel insights into baseline sex differences, as well as characterizes baseline diurnal activity variations, in the AßPP/PS1 and APPNL-F/NL-F AD mouse models.


Assuntos
Doença de Alzheimer/patologia , Ritmo Circadiano/fisiologia , Disfunção Cognitiva/patologia , Fenótipo , Placa Amiloide/patologia , Animais , Modelos Animais de Doenças , Feminino , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Fatores Sexuais , Aprendizagem Espacial
8.
J Mol Struct ; 1250: 131879, 2022 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-34785822

RESUMO

The recent evolution of the SARS-like Coronavirus has ravaged the world. The deadly virus has claimed over millions of lives across the world and hence highlights the need to develop effective therapeutic drugs to contain the disease posed by this parasite. In this study, the inhibitory potential of fifty (50) dietary polyphenols against Coronavirus (SARS-CoV-2) main protease (Mpro) was conducted using the Autodock Vina Molecular docking tool. In the virtual screening process, the binding affinity of Remdesivir (-7.7 kcal/mol) currently used to treat COVID-19 patients was set as the cut-off value to screen out less probable inhibitors. Ellagic acid, Kievitone, and Punicalin were the only promising ligands with binding affinities (-8.9 kcal/mol, -8.0 kcal/mol and -7.9 kcal/mol respectively) lower than the set cut-off value. Furthermore, we validated Ellagic acid and Kievitone efficacy by subjecting them to molecular dynamics simulation and further stability was assessed at the molecular mechanics and quantum levels. The overall analysis indicates both compounds demonstrate higher stability and inhibitory potential to bind to the crucial His41 and Cys145 catalytic dyad of Mpro than the standard drug. However, further analysis of punicalin after evaluating its docking score was not conducted as the ligand pharmacokinetics properties suggests it could pose serious adverse effect to the health of participants in clinical trials. Hence, we employed a more safe approach by filtering out the compound during this study. Conclusively, while Ellagic acid and kievitone polyphenolic compounds have been demonstrated to be promising under this in silico research, further studies are needed to substantiate their clinical relevance.

9.
Drug Metab Pers Ther ; 37(2): 191-200, 2021 12 09.
Artigo em Inglês | MEDLINE | ID: mdl-34881530

RESUMO

OBJECTIVES: This study investigates the influence of Cnestis ferruginea (CF) on kainic acid (KA)-induced immediate early genes (IEGs) associated with hippocampal sclerosis in temporal lobe epilepsy (TLE) in mice. METHODS: Animals were randomly divided into preventive treatment; vehicle (10 mL/kg, p.o.) or CF (400 mg/kg, p.o.) for three consecutive days before KA (5 mg/kg, i.p.) on days 4 and 5. In the reversal model, KA (5 mg/kg, i.p.) was administered on days 1 and 2 before CF (400 mg/kg) administration on days 3-5. Animals were euthanized on day 5, 6 h after KA exposure in preventive model and 1 h after CF administration in reversal model to estimate markers of IEGs. RESULTS: KA upregulated the expression of c-Fos protein by 3.32-, 9.45-, 8.13-, and 8.66-fold in the hippocampal CA1, CA2, CA3, and DG regions, respectively. Also, KA elevated inducible nitric oxide synthase protein expression by 10.9-, 10.6-, 9.78-, and 9.51-fold. Besides, mRNA expression of brain-derived neurotrophic factors and heat shock protein was increased by 2.38- and 1.39-fold, respectively, after exposure to KA which were attenuated by CF. CONCLUSIONS: CF attenuated KA-induced IEGs and could be used as an adjunct in TLE.


Assuntos
Connaraceae , Epilepsia do Lobo Temporal , Animais , Modelos Animais de Doenças , Epilepsia do Lobo Temporal/induzido quimicamente , Epilepsia do Lobo Temporal/tratamento farmacológico , Epilepsia do Lobo Temporal/genética , Genes Precoces/genética , Humanos , Ácido Caínico , Camundongos , Extratos Vegetais/farmacologia
10.
Cells ; 10(10)2021 10 13.
Artigo em Inglês | MEDLINE | ID: mdl-34685709

RESUMO

In recent years, aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor, has been considered to be involved in aging phenotypes across several species. This receptor is a highly conserved biosensor that is activated by numerous exogenous and endogenous molecules, including microbiota metabolites, to mediate several physiological and toxicological functions. Brain aging hallmarks, which include glial cell activation and inflammation, increased oxidative stress, mitochondrial dysfunction, and cellular senescence, increase the vulnerability of humans to various neurodegenerative diseases. Interestingly, many studies have implicated AhR signaling pathways in the aging process and longevity across several species. This review provides an overview of the impact of AhR pathways on various aging hallmarks in the brain and the implications for AhR signaling as a mechanism in regulating aging-related diseases of the brain. We also explore how the nature of AhR ligands determines the outcomes of several signaling pathways in brain aging processes.


Assuntos
Envelhecimento/metabolismo , Encéfalo/metabolismo , Receptores de Hidrocarboneto Arílico/metabolismo , Animais , Encefalopatias/metabolismo , Encefalopatias/patologia , Humanos , Neurogênese , Transdução de Sinais
11.
Surg Res Pract ; 2021: 6584813, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33564712

RESUMO

BACKGROUND: Trauma is still the leading cause of death in individuals between the ages of 1 and 44 years. Establishment of good trauma centres and systems has been shown to have a significant positive impact on outcomes. Surgical specialties, particularly trauma, are becoming less attractive in different parts of the world for a variety of reasons. AIM: The aim of this study is to ascertain the perception and attitude of future surgeons towards trauma care in Nigeria. Materials and methods. This is a cross-sectional study using a pretested, structured, paper-based questionnaire which was administered to consecutive surgical trainees at the annual revision course of West African College of Surgeons. Data were analyzed using SPSS version 12, and results are presented in tables and figures. RESULTS: One hundred and fifty-seven questionnaires were adequately completed with a male-to-female ratio of 18 : 1 and median age of 30 years. There is a general agreement among the respondents that trauma incidence in Nigeria is high or very high. While about 70% of the respondents believe that the Nigerian trauma system is poorly planned, about 19% think it is nonexistent. 81 (53.7%) agree or strongly agree that managing trauma patients is too stressful. A good number, 116 (74.4%), strongly agree that having a separate dedicated trauma unit will improve care and outcome. While 82% of the surgical trainees support post fellowship training in trauma, only 62.2% will like to have the training. There is no significant difference between the proportion of males and females who would like to have the training. CONCLUSION: Surgical trainees in Nigeria have good perception and positive attitude towards trauma care. Primary prevention measures must be emphasized during surgical trainees' training in trauma.

13.
World J Surg ; 44(8): 2542-2549, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32318791

RESUMO

BACKGROUND: Feedback has become an integral part of learning within the medical profession, particularly as training becomes more trainees'-centered. Feedback from the trainees about their training and trainers is essential for effective and high-quality training. The purpose of this survey was to evaluate trainees' perceptions on feedback on their postgraduate training and trainers in West Africa. METHODS: Cross-sectional self-administered written survey of junior and senior registrar attending the annual revision and update course of the West African College of Surgeons. Information sought included sociodemographic variables, perception on feedback, opportunity to give feedback, trainee-trainers relationship and their opinion on different aspects of the postgraduate program where they would like to give feedback. RESULTS: The response rate was 81.5% (66/81). Median age was 33 years. Sixty trainees (90.9%) were junior registrars. Sixty-four (97%) trainees would like to give feedback about their training and trainers. Only 18 (27.3%) trainees have had opportunity of giving feedback about their training. Most trainees (90.9%) would like to give feedback on patient care and learning environment; 89.4% would like to give feedback on their training curriculum and 87.9% would like to give feedback on their operating room experiences. Most trainees (81.8%) believed trainee feedback is of critical importance to training. With regard to trainees-trainer relationship, 39 (59.1%) trainees were either unsatisfied or reported just a fair relationship. CONCLUSIONS: This study has shown that many of the trainees lack opportunity of giving feedback on their training but considered feedback critical to their training. Trainees would like to give feedback on patient care, curriculum, learning environment and operative room experience. Trainee feedback should be encouraged in surgical training in West Africa.


Assuntos
Competência Clínica , Educação de Pós-Graduação em Medicina/organização & administração , Avaliação Educacional/métodos , Cirurgia Geral/educação , Conhecimento Psicológico de Resultados , Cirurgiões/educação , Adulto , África Ocidental , Estudos Transversais , Currículo , Feminino , Humanos , Aprendizagem , Masculino , Salas Cirúrgicas , Inquéritos e Questionários
14.
J Ethnopharmacol ; 243: 112117, 2019 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-31351192

RESUMO

ETHNOPHARMACOLOGY RELEVANCE: the root decoction of Cnestis ferruginea Vahl ex DC (Connaraceae) is widely used in traditional African medicine for the treatment of various ailments including pain, inflammation and epilepsy. We have earlier reported anticonvulsant effect of Cnestis ferruginea root extract in mice. AIM OF THE STUDY: to evaluate the effect of ethanolic root extract of Cnestis ferruginea (CF) on kainic acid (KA)-induced temporal lobe epilepsy (TLE) in mice as well as the involvement of inflammatory mediators and oxidative stress. MATERIALS AND METHODS: mice were randomly divided into preventive treatment (vehicle (normal saline) or CF (400 mg/kg, p.o.) for 3 consecutive days before KA (5 mg/kg, i.p.) on days 4 and 5. In the reversal model, KA (5 mg/kg, i.p.) was administered on days 1 and 2 before vehicle or CF (400 mg/kg) administration on days 3-5. The effect of treatments on seizure severity was recorded using Racine scale. Animals were euthanized on day 5, 6 h after last KA exposure in preventive model and 1 h after CF administration in reversal model to estimate markers of oxidative stress and neuroinflammation. RESULTS: exposure of mice to KA induced TLE evidenced in increased severity of seizures which was significantly reduced by the pre- and post-treatment of mice with CF. Moreso, KA-induced malondialdehyde/nitrite generation and GSH deficit in the brain were attenuated by CF treatments. KA-induced up-regulation of inflammatory transcription factors; cyclooxygenase-2 (COX-2) and nuclear facor-kappaB (NF-κB) in the CA1, CA2, CA3 and dentate gyrus (DG) regions of the hippocampus regions were attenuated by CF treatments. CONCLUSION: findings from this study showed that Cnestis ferruginea root extract ameliorated KA-induced TLE through enhancement of antioxidant defense mechanism and attenuation of neuro-inflammatory transcription factors. Thus, could possibly be a potential phytotherapeutic agent in the management of temporal lobe epilepsy.


Assuntos
Anticonvulsivantes/uso terapêutico , Connaraceae , Epilepsia do Lobo Temporal/tratamento farmacológico , Extratos Vegetais/uso terapêutico , Convulsões/tratamento farmacológico , Animais , Anticonvulsivantes/farmacologia , Ciclo-Oxigenase 2/metabolismo , Epilepsia do Lobo Temporal/induzido quimicamente , Epilepsia do Lobo Temporal/metabolismo , Hipocampo/efeitos dos fármacos , Hipocampo/metabolismo , Inflamação/induzido quimicamente , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Ácido Caínico , Masculino , Medicinas Tradicionais Africanas , Camundongos , NF-kappa B/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/farmacologia , Raízes de Plantas , Convulsões/induzido quimicamente , Convulsões/metabolismo
15.
J Emerg Trauma Shock ; 9(1): 3-9, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26957819

RESUMO

BACKGROUND: Abdominal injuries contribute significantly to battlefield trauma morbidity and mortality. This study sought to determine the incidence, demographics, clinical features, spectrum, severity, management, and outcome of abdominal trauma during a civilian conflict. MATERIALS AND METHODS: A prospective analysis of patients treated for abdominal trauma during the Jos civil crises between December 2010 and May 2012 at the Jos University Teaching Hospital. RESULTS: A total of 109 victims of communal conflicts with abdominal injuries were managed during the study period with 89 (81.7%) males and 20 (18.3%) females representing about 12.2% of the total 897 combat related injuries. The peak age incidence was between 21 and 40 years (range: 3-71 years). The most frequently injured intra-abdominal organs were the small intestine 69 (63.3%), colon 48 (44%), and liver 41 (37.6%). Forty-four (40.4%) patients had extra-abdominal injuries involving the chest in 17 (15.6%), musculoskeletal 12 (11%), and the head in 9 (8.3%). The most prevalent weapon injuries were gunshot 76 (69.7%), explosives 12 (11%), stab injuries 11 (10.1%), and blunt abdominal trauma 10 (9.2%). The injury severity score varied from 8 to 52 (mean: 20.8) with a fatality rate of 11 (10.1%) and morbidity rate of 29 (26.6%). Presence of irreversible shock, 3 or more injured intra-abdominal organs, severe head injuries, and delayed presentation were the main factors associated with mortality. CONCLUSION: Abdominal trauma is major life-threatening injuries during conflicts. Substantial mortality occurred with loss of nearly one in every 10 hospitalized victims despite aggressive emergency room resuscitation. The resources expenditure, propensity for death and expediency of timing reinforce the need for early access to the wounded in a concerted trauma care systems.

17.
Artigo em Inglês | MEDLINE | ID: mdl-26569553

RESUMO

This study examined the effects of executive control and working memory on older adults' sentence-final word recognition. The question we addressed was the importance of executive functions to this process and how it is modulated by the predictability of the speech material. To this end, we tested 173 neurologically intact adult native English speakers aged 55-84 years. Participants were given a sentence-final word recognition test in which sentential context was manipulated and sentences were presented in different levels of babble, and multiple tests of executive functioning assessing inhibition, shifting, and efficient access to long-term memory, as well as working memory. Using a generalized linear mixed model, we found that better inhibition was associated with higher accuracy in word recognition, while increased age and greater hearing loss were associated with poorer performance. Findings are discussed in the framework of semantic control and are interpreted as supporting a theoretical view of executive control which emphasizes functional diversity among executive components.


Assuntos
Cognição/fisiologia , Reconhecimento Psicológico/fisiologia , Percepção da Fala/fisiologia , Idoso , Função Executiva/fisiologia , Feminino , Humanos , Masculino , Memória de Curto Prazo/fisiologia , Pessoa de Meia-Idade , Testes Neuropsicológicos
18.
J Int Neuropsychol Soc ; 21(2): 116-25, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25854271

RESUMO

This study explored effects of the metabolic syndrome (MetS) on language in aging. MetS is a constellation of five vascular and metabolic risk factors associated with the development of chronic diseases and increased risk of mortality, as well as brain and cognitive impairments. We tested 281 English-speaking older adults aged 55-84, free of stroke and dementia. Presence of MetS was based on the harmonized criteria (Alberti et al., 2009). Language performance was assessed by measures of accuracy and reaction time on two tasks of lexical retrieval and two tasks of sentence processing. Regression analyses, adjusted for age, education, gender, diabetes, hypertension, and heart disease, demonstrated that participants with MetS had significantly lower accuracy on measures of lexical retrieval (action naming) and sentence processing (embedded sentences, both subject and object relative clauses). Reaction time was slightly faster on the test of embedded sentences among those with MetS. MetS adversely affects the language performance of older adults, impairing accuracy of both lexical retrieval and sentence processing. This finding reinforces and extends results of earlier research documenting the negative influence of potentially treatable medical conditions (diabetes, hypertension) on language performance in aging. The unanticipated finding that persons with MetS were faster in processing embedded sentences may represent an impairment of timing functions among older individuals with MetS.


Assuntos
Envelhecimento , Transtornos da Linguagem/etiologia , Doenças Metabólicas/complicações , Idoso , Idoso de 80 Anos ou mais , Humanos , Transtornos da Linguagem/diagnóstico , Testes de Linguagem , Modelos Logísticos , Pessoa de Meia-Idade
19.
PLoS One ; 9(12): e116185, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25542022

RESUMO

BACKGROUND: Achieving accreditation in laboratories is a challenge in Nigeria like in most African countries. Nigeria adopted the World Health Organization Regional Office for Africa Stepwise Laboratory (Quality) Improvement Process Towards Accreditation (WHO/AFRO- SLIPTA) in 2010. We report on FHI360 effort and progress in piloting WHO-AFRO recognition and accreditation preparedness in six health facility laboratories in five different states of Nigeria. METHOD: Laboratory assessments were conducted at baseline, follow up and exit using the WHO/AFRO- SLIPTA checklist. From the total percentage score obtained, the quality status of laboratories were classified using a zero to five star rating, based on the WHO/AFRO quality improvement stepwise approach. Major interventions include advocacy, capacity building, mentorship and quality improvement projects. RESULTS: At baseline audit, two of the laboratories attained 1- star while the remaining four were at 0- star. At follow up audit one lab was at 1- star, two at 3-star and three at 4-star. At exit audit, four labs were at 4- star, one at 3-star and one at 2-star rating. One laboratory dropped a 'star' at exit audit, while others consistently improved. The two weakest elements at baseline; internal audit (4%) and occurrence/incidence management (15%) improved significantly, with an exit score of 76% and 81% respectively. The elements facility and safety was the major strength across board throughout the audit exercise. CONCLUSION: This effort resulted in measurable and positive impact on the laboratories. We recommend further improvement towards a formal international accreditation status and scale up of WHO/AFRO- SLIPTA implementation in Nigeria.


Assuntos
Instalações de Saúde , Laboratórios , Acreditação , Instalações de Saúde/normas , Humanos , Laboratórios/normas , Nigéria , Controle de Qualidade , Melhoria de Qualidade
20.
Emerg Med J ; 30(9): 758-62, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23038694

RESUMO

BACKGROUND: Emergency department (ED) violence is common and widespread. ED staff receive both verbal and physical abuse, with ED nurses bearing the brunt of this violence. The violence is becoming increasingly common and lethal and many institutions are still improperly prepared to deal with it. METHODS: A questionnaire based survey of the perception of violence among nurses working in six tertiary hospitals' EDs across five states in Nigeria was conducted. RESULTS: 81 nurses were interviewed with a male to female ratio of 1:4. Most were right about the definition of violence. About 88.6% of respondents have witnessed ED violence while 65.0% had been direct victims before. Nurses followed by doctors were the usual victims. The acts were carried out mostly by visitors to the ED. Men were usually responsible for the violence, which usually occurred in the evenings. Weapons were not commonly utilised: only 15.8% of the nurses had been threatened with a weapon over a 1-year period. The main perceived reasons for violence were overcrowded emergency rooms, long waiting time and inadequate system of security. All the institutions were lacking in basic strategies for prevention. While most of the nurses were not satisfied with the EDs that were considered not safe, few would wish for redeployment to other departments/units. CONCLUSIONS: There is a need to make the EDs safer for all users. This can be achieved by a deliberate management policy of 'zero' tolerance to workplace violence, effective reporting systems, adequate security and staff training on prevention of violence.


Assuntos
Atitude do Pessoal de Saúde , Serviço Hospitalar de Emergência , Violência/estatística & dados numéricos , Adulto , Aglomeração , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nigéria , Recursos Humanos de Enfermagem Hospitalar/psicologia , Segurança , Inquéritos e Questionários , Violência/prevenção & controle
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